IRRIGATION AND NUTRIENT REQUIREMENT OF GARLIC (ALLIUM-SATIVUM) UNDER SOUTH SAURASHTRA REGION OF GUJARAT

A field experiment was conducted during winter season (rabi of 1991-92 and 1992-93) oh clayey soil of Junagadh to study the effect of irriga tion (1.0, 1.2 and 1.4 IW : CPE ratio), nitrogen (25, 50 and 75 kg N/h a) and phosphorus (11, 22 and 33 kg P/ha) on garlic (Allium sativum L. ). The crop irrigated at 1.4 irrigation water:cummulative pan evaporat ion (IW : CPE) ratio produced significantly higher bulb yield but rema ined at par with 1.2 IW : CPE. Maximum net return was secured with irr igation at 1.4 IW : CPE whereas maximum water-use efficiency at 1.2 IW : CPE. Different levels of N did not exert significant influence On b ulb yield; however, application of 50 kg N/ha recorded maximum net ret urn and water-use efficiency. Application of 11 kg P/ha recorded signi ficantly equivalent bulb yield to that of 33 kg Pma and realized maxim um net return.